v1-0001-command-line-colorization-on-windows.patch

diff --git a/doc/src/sgml/release-12.sgml b/doc/src/sgml/release-12.sgml
index 68949b2026..26b94bf4e4 100644
--- a/doc/src/sgml/release-12.sgml
+++ b/doc/src/sgml/release-12.sgml
@@ -3825,6 +3825,10 @@ Author: Peter Eisentraut <peter@eisentraut.org>
        For example, the default behavior is equivalent to
        <literal>PG_COLORS="error=01;31:warning=01;35:locus=01"</literal>.
       </para>
+
+      <para>
+       Notably, VT100 support is required for the colorization on Windows.
+      </para>
      </listitem>
 
      </itemizedlist>
diff --git a/src/common/logging.c b/src/common/logging.c
index 895da7150e..8cb59fb609 100644
--- a/src/common/logging.c
+++ b/src/common/logging.c
@@ -32,6 +32,31 @@ static const char *sgr_locus = NULL;
 #define ANSI_ESCAPE_FMT "\x1b[%sm"
 #define ANSI_ESCAPE_RESET "\x1b[0m"
 
+#ifdef WIN32
+/*
+ * Check Windows support for VT100
+ */
+static bool
+enable_vt_mode()
+{
+	/* Check stderr */
+	HANDLE hOut = GetStdHandle(STD_ERROR_HANDLE);
+	DWORD dwMode = 0;
+
+	if (hOut == INVALID_HANDLE_VALUE)
+		return false;
+
+	if (!GetConsoleMode(hOut, &dwMode))
+		return false;
+
+	dwMode |= ENABLE_VIRTUAL_TERMINAL_PROCESSING;
+	if (!SetConsoleMode(hOut, dwMode))
+		return false;
+
+	return true;
+}
+#endif
+
 /*
  * This should be called before any output happens.
  */
@@ -47,6 +72,13 @@ pg_logging_init(const char *argv0)
 	progname = get_progname(argv0);
 	__pg_log_level = PG_LOG_INFO;
 
+#ifdef WIN32
+		bool	vt_mode = enable_vt_mode();
+
+		if(!vt_mode)
+			pg_color_env = NULL;
+#endif
+
 	if (pg_color_env)
 	{
 		if (strcmp(pg_color_env, "always") == 0 ||